"Lots of Luck", as pronounced (usually sarcastically) by the dog Astro on the ABC cartoon series "The Jetsons" in 1962 and 1963. Astro - being a dog - pronounces most words with an intial "R" sound, as if he is growling.

Besides an un-PCimitation of an Asian's speech accent, rotsa ruck is a backhanded rejoinder: It is a way of sarcastically saying: "You'll never be successful at doing that." OR "That's a near-impossible task."

Probably originated on American college campuses of the 1960's.

Man #1: I'm studying political science and world religions, so I can finally bring peace between the Jews and Muslims on the Gaza Strip.